/* ==============================================
   AIoTChain 2026 — Cutting-edge design system
   Glass nav, Bento grid, Scroll-driven anims,
   Noise texture, 3D tilt, Text reveals
   ============================================== */

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --bg: #05080f;
    --surface: rgba(255, 255, 255, 0.02);
    --surface-2: rgba(255, 255, 255, 0.04);
    --border: rgba(255,255,255,0.06);
    --border-hover: rgba(15, 224, 244, 0.2);
    --white: #edf5fa;
    --gray: #6b7f96;
    --gray-light: #9cb0c5;
    --accent: #0FE0F4;
    --accent2: #22B9E7;
    --gradient: linear-gradient(135deg, #0FE0F4, #22B9E7);
    --glass: rgba(8, 14, 24, 0.6);
    --glass-border: rgba(255,255,255,0.08);
    --radius: 16px;
    --radius-sm: 10px;
    --radius-pill: 100px;
    --font-display: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
    --ease: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-out: cubic-bezier(0.33, 1, 0.68, 1);
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
    font-family: var(--font-body);
    background: var(--bg);
    color: var(--white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    line-height: 1.6;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 32px; }

.gradient-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ---- WebGL + Noise ---- */
#glCanvas { position: fixed; inset: 0; z-index: 0; pointer-events: none; }

.noise-overlay {
    position: fixed; inset: 0; z-index: 1; pointer-events: none;
    opacity: 0.035;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    background-size: 200px;
}

/* ---- TAG PILL ---- */
.tag-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    color: var(--accent);
    background: rgba(15, 224, 244, 0.06);
    border: 1px solid rgba(15, 224, 244, 0.15);
    border-radius: var(--radius-pill);
    padding: 6px 18px;
    margin-bottom: 20px;
}

/* ---- SECTION HEAD ---- */
.section-head { margin-bottom: 56px; }
.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4.5vw, 3.6rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
}

/* ---- BUTTONS ---- */
.btn-primary {
    display: inline-flex; align-items: center; gap: 10px;
    padding: 14px 28px;
    background: var(--gradient);
    color: #000;
    font-weight: 600;
    font-size: 0.82rem;
    border-radius: var(--radius-pill);
    transition: transform 0.3s var(--ease), box-shadow 0.3s;
    letter-spacing: 0.02em;
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(15,224,244,0.25);
}
.btn-primary.btn-lg { padding: 18px 36px; font-size: 0.9rem; }

.btn-ghost {
    display: inline-flex; align-items: center;
    padding: 14px 28px;
    border: 1px solid var(--border);
    color: var(--white);
    font-weight: 500;
    font-size: 0.82rem;
    border-radius: var(--radius-pill);
    transition: border-color 0.3s, background 0.3s, transform 0.3s var(--ease);
}
.btn-ghost:hover {
    border-color: var(--border-hover);
    background: var(--surface);
    transform: translateY(-2px);
}

/* ===================== NAV — floating glass pill ===================== */
.nav {
    position: fixed; top: 16px; left: 50%; transform: translateX(-50%);
    z-index: 200;
    width: auto; max-width: 820px;
    display: none;
}
.nav-pill {
    display: flex; align-items: center; gap: 8px;
    padding: 8px 8px 8px 18px;
    background: var(--glass);
    backdrop-filter: blur(24px) saturate(1.4);
    -webkit-backdrop-filter: blur(24px) saturate(1.4);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-pill);
    box-shadow: 0 4px 24px rgba(0,0,0,0.3), inset 0 1px 0 rgba(255,255,255,0.04);
    transition: box-shadow 0.4s;
}
.nav-pill:hover { box-shadow: 0 8px 40px rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.06); }

.nav-logo {
    display: inline-flex;
    align-items: center;
    white-space: nowrap;
}
.nav-logo img { height: 26px; width: auto; }
.nav-logo-text {
    font-family: "Space Grotesk", sans-serif;
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--white);
}
.nav-center { display: flex; gap: 4px; margin: 0 8px; }
.nav-link {
    position: relative;
    padding: 8px 14px;
    font-size: 0.72rem;
    font-weight: 500;
    letter-spacing: 0.03em;
    color: var(--gray-light);
    border-radius: var(--radius-pill);
    transition: color 0.3s, background 0.3s;
    overflow: hidden;
}
.nav-link:hover {
    color: var(--white);
    background: rgba(255,255,255,0.06);
}
.nav-link span { position: relative; z-index: 1; }

.nav-cta {
    display: flex; align-items: center; gap: 6px;
    padding: 8px 18px;
    background: var(--gradient);
    color: #000;
    font-size: 0.72rem;
    font-weight: 600;
    border-radius: var(--radius-pill);
    letter-spacing: 0.03em;
    transition: transform 0.3s var(--ease), box-shadow 0.3s;
}
.nav-cta:hover {
    transform: scale(1.04);
    box-shadow: 0 4px 20px rgba(15,224,244,0.3);
}
.nav-cta svg { flex-shrink: 0; }

.nav-burger {
    display: none; background: none; border: none; cursor: pointer;
    padding: 8px; position: fixed; top: 20px; right: 24px; z-index: 201;
}
.nav-burger span {
    display: block; width: 22px; height: 2px;
    background: var(--white); margin: 5px 0;
    border-radius: 2px;
    transition: transform 0.3s var(--ease), opacity 0.3s;
}
.nav-burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.mob-menu {
    position: fixed; inset: 0; z-index: 199;
    background: rgba(5, 8, 15, 0.96);
    backdrop-filter: blur(20px);
    display: flex; flex-direction: column; justify-content: center; align-items: center;
    opacity: 0; pointer-events: none;
    transition: opacity 0.4s var(--ease);
}
.mob-menu.open { opacity: 1; pointer-events: auto; }
.mob-menu-inner { display: flex; flex-direction: column; gap: 16px; text-align: center; }
.mob-menu-inner a {
    font-family: var(--font-display);
    font-size: clamp(1.6rem, 5vw, 2.4rem); font-weight: 600;
    color: var(--gray-light);
    transition: color 0.3s;
}
.mob-menu-inner a:hover { color: var(--accent); }
.mob-menu-footer {
    position: absolute; bottom: 32px;
    display: flex; gap: 24px;
    font-size: 0.72rem; color: var(--gray);
}

/* ===================== HERO ===================== */
.hero {
    position: relative; z-index: 2;
    min-height: 100vh;
    display: flex; align-items: center; justify-content: center;
    text-align: center;
    padding: 120px 32px 80px;
    overflow: hidden;
}
.hero-content { max-width: 900px; position: relative; z-index: 10; }

/* --- Particle canvas --- */
#particleCanvas {
    position: absolute; inset: 0; z-index: 1;
    pointer-events: none;
    width: 100%; height: 100%;
}

/* --- Perspective grid floor --- */
.hero-grid {
    position: absolute;
    bottom: -10%; left: -20%; right: -20%;
    height: 60%;
    background:
        linear-gradient(90deg, rgba(15,224,244,0.06) 1px, transparent 1px),
        linear-gradient(0deg, rgba(15,224,244,0.06) 1px, transparent 1px);
    background-size: 60px 60px;
    transform: perspective(400px) rotateX(55deg);
    transform-origin: center bottom;
    mask-image: linear-gradient(to top, rgba(0,0,0,0.5) 0%, transparent 80%);
    -webkit-mask-image: linear-gradient(to top, rgba(0,0,0,0.5) 0%, transparent 80%);
    animation: gridPulse 4s ease-in-out infinite;
    z-index: 0;
}
@keyframes gridPulse {
    0%,100% { opacity: 0.6; }
    50% { opacity: 1; }
}

/* --- Animated ring --- */
.hero-ring {
    position: absolute;
    top: 50%; left: 50%;
    width: 520px; height: 520px;
    transform: translate(-50%, -50%);
    z-index: 2;
    pointer-events: none;
}
.hero-ring-inner {
    position: absolute; inset: 0;
    border-radius: 50%;
    border: 1.5px solid rgba(15,224,244,0.12);
    animation: ringRotate 20s linear infinite;
    background: radial-gradient(circle, rgba(15,224,244,0.04) 0%, transparent 70%);
}
.hero-ring-inner::before {
    content: '';
    position: absolute;
    top: -2px; left: 50%; width: 8px; height: 8px;
    margin-left: -4px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 16px var(--accent), 0 0 40px rgba(15,224,244,0.4);
}
.hero-ring-inner::after {
    content: '';
    position: absolute;
    bottom: -2px; right: 25%; width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--accent2);
    box-shadow: 0 0 12px var(--accent2);
}
@keyframes ringRotate { to { transform: rotate(360deg); } }

.hero-ring-pulse {
    position: absolute; inset: -40px;
    border-radius: 50%;
    border: 1px solid rgba(15,224,244,0.08);
    animation: ringExpand 3s ease-out infinite;
}
.hero-ring-pulse.delay2 { animation-delay: 1.5s; }
@keyframes ringExpand {
    0% { transform: scale(0.85); opacity: 0.6; }
    100% { transform: scale(1.3); opacity: 0; }
}

/* --- Orbiting dots --- */
.hero-orbit {
    position: absolute;
    top: 50%; left: 50%;
    width: 650px; height: 650px;
    transform: translate(-50%, -50%);
    z-index: 3;
    pointer-events: none;
    animation: orbitSpin 30s linear infinite;
}
@keyframes orbitSpin { to { transform: translate(-50%, -50%) rotate(360deg); } }
.orbit-dot {
    position: absolute;
    width: 5px; height: 5px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 10px var(--accent), 0 0 30px rgba(15,224,244,0.3);
}
.od1 { top: 0; left: 50%; }
.od2 { bottom: 0; left: 50%; background: var(--accent2); box-shadow: 0 0 10px var(--accent2); }
.od3 { top: 50%; left: 0; }
.od4 { top: 50%; right: 0; background: var(--accent2); box-shadow: 0 0 10px var(--accent2); }
.orbit-dot::after {
    content: '';
    position: absolute;
    top: 50%; left: 50%;
    width: 40px; height: 2px;
    margin-top: -1px; margin-left: -20px;
    background: linear-gradient(90deg, transparent, rgba(15,224,244,0.3), transparent);
    animation: dotTrail 2s ease-in-out infinite;
}
@keyframes dotTrail { 0%,100% { opacity: 0; } 50% { opacity: 1; } }

/* --- Radial light beams --- */
.hero-beams {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 100%; height: 100%;
    z-index: 1;
    pointer-events: none;
}
.beam {
    position: absolute;
    top: 50%; left: 50%;
    width: 2px;
    height: 40vh;
    transform-origin: top center;
    background: linear-gradient(to bottom, rgba(15,224,244,0.2), transparent);
    animation: beamPulse 4s ease-in-out infinite;
}
.b1 { transform: rotate(0deg); }
.b2 { transform: rotate(72deg); animation-delay: 1s; }
.b3 { transform: rotate(144deg); animation-delay: 2s; }
.b4 { transform: rotate(216deg); animation-delay: 0.5s; }
@keyframes beamPulse {
    0%, 100% { opacity: 0; height: 20vh; }
    50% { opacity: 1; height: 40vh; }
}

/* --- Floating tech tags --- */
.hero-float-tags { position: absolute; inset: 0; z-index: 4; pointer-events: none; }
.float-tag {
    position: absolute;
    padding: 6px 14px;
    font-size: 0.6rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent);
    background: rgba(15,224,244,0.05);
    border: 1px solid rgba(15,224,244,0.12);
    border-radius: var(--radius-pill);
    backdrop-filter: blur(8px);
    animation: floatTag 6s ease-in-out infinite;
    opacity: 0;
    animation-fill-mode: both;
}
.ft1 { top: 18%; left: 8%; animation-delay: 0.5s; }
.ft2 { top: 25%; right: 10%; animation-delay: 1.2s; }
.ft3 { bottom: 30%; left: 6%; animation-delay: 0.8s; }
.ft4 { top: 15%; right: 25%; animation-delay: 2s; }
.ft5 { bottom: 25%; right: 8%; animation-delay: 1.5s; }
.ft6 { bottom: 20%; left: 22%; animation-delay: 2.5s; }
@keyframes floatTag {
    0% { opacity: 0; transform: translateY(20px); }
    20% { opacity: 0.7; }
    50% { transform: translateY(-10px); opacity: 0.9; }
    80% { opacity: 0.7; }
    100% { opacity: 0; transform: translateY(20px); }
}

/* --- Horizontal glow lines --- */
.hero-hlines { position: absolute; inset: 0; z-index: 1; pointer-events: none; overflow: hidden; }
.hline {
    position: absolute;
    height: 1px;
    width: 200px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    animation: hlineSweep 4s ease-in-out infinite;
    opacity: 0.4;
}
.hl1 { top: 30%; left: -200px; animation-duration: 3.5s; }
.hl2 { top: 55%; right: -200px; animation-duration: 4.5s; animation-delay: 1.2s; animation-direction: reverse; }
.hl3 { top: 75%; left: -200px; animation-duration: 5s; animation-delay: 2s; }
@keyframes hlineSweep {
    0% { transform: translateX(0); opacity: 0; }
    10% { opacity: 0.6; }
    90% { opacity: 0.6; }
    100% { transform: translateX(calc(100vw + 400px)); opacity: 0; }
}

/* --- Corner accents --- */
.hero-corner {
    position: absolute;
    width: 60px; height: 60px;
    z-index: 5;
    pointer-events: none;
}
.hero-corner::before, .hero-corner::after {
    content: '';
    position: absolute;
    background: rgba(15,224,244,0.2);
}
.hero-corner::before { width: 1px; height: 100%; }
.hero-corner::after { width: 100%; height: 1px; }
.hc-tl { top: 60px; left: 40px; }
.hc-tl::before { top: 0; left: 0; }
.hc-tl::after { top: 0; left: 0; }
.hc-tr { top: 60px; right: 40px; }
.hc-tr::before { top: 0; right: 0; }
.hc-tr::after { top: 0; right: 0; }
.hc-bl { bottom: 60px; left: 40px; }
.hc-bl::before { bottom: 0; left: 0; }
.hc-bl::after { bottom: 0; left: 0; }
.hc-br { bottom: 60px; right: 40px; }
.hc-br::before { bottom: 0; right: 0; }
.hc-br::after { bottom: 0; right: 0; }

/* --- Hero text glow effect --- */
.hero-title { position: relative; }
.hero-title::after {
    content: '';
    position: absolute;
    bottom: -10px; left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 80px;
    background: radial-gradient(ellipse, rgba(15,224,244,0.15), transparent 70%);
    filter: blur(30px);
    pointer-events: none;
    z-index: -1;
}

.hero-badge {
    display: inline-flex; align-items: center; gap: 10px;
    padding: 8px 20px 8px 12px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    font-size: 0.72rem; font-weight: 500; color: var(--gray-light);
    margin-bottom: 32px;
    opacity: 0; animation: fadeUp 0.8s var(--ease) 0.2s forwards;
}
.hero-badge-dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 8px var(--accent), 0 0 24px rgba(15,224,244,0.4);
    animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.4; transform: scale(0.8); } }

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(4rem, 14vw, 10rem);
    font-weight: 700;
    line-height: 0.95;
    letter-spacing: -0.02em;
    margin-bottom: 36px;
    text-shadow: 0 0 60px rgba(15,224,244,0.08);
}
.hero-line { display: block; overflow: hidden; }
.hero-char-wrap {
    display: inline-block; overflow: hidden;
}
.hero-char {
    display: inline-block;
    transform: translateY(110%);
    animation: charReveal 0.8s var(--ease) forwards;
}
/* Stagger via JS */

@keyframes charReveal {
    to { transform: translateY(0); }
}

.hero-line[data-line="1"] .hero-char {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-line[data-line="2"] .hero-char { color: var(--white); }

.hero-desc {
    font-size: clamp(0.9rem, 1.5vw, 1.1rem);
    color: var(--gray-light);
    margin-bottom: 48px;
    margin-top: 12px;
    line-height: 1.7;
}
.line-reveal {
    display: block;
    opacity: 0;
    animation: fadeUp 0.7s var(--ease) forwards;
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}

.hero-actions {
    display: flex; gap: 14px; justify-content: center; flex-wrap: wrap;
    opacity: 0; animation: fadeUp 0.7s var(--ease) 1s forwards;
}
.hero-actions .btn-primary {
    box-shadow: 0 0 24px rgba(15,224,244,0.3), 0 0 60px rgba(15,224,244,0.1);
}

.hero-scroll {
    position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%);
    width: 2px; height: 48px;
    background: var(--border);
    border-radius: 2px;
    overflow: hidden;
    z-index: 10;
}
.hero-scroll-bar {
    width: 100%; height: 50%;
    background: var(--accent);
    border-radius: 2px;
    box-shadow: 0 0 8px var(--accent);
    animation: scrollBar 1.8s ease-in-out infinite;
}
@keyframes scrollBar {
    0% { transform: translateY(-100%); }
    50% { transform: translateY(100%); }
    100% { transform: translateY(200%); }
}

/* ===================== MARQUEE ===================== */
.marquee {
    position: relative; z-index: 2;
    overflow: hidden;
    padding: 20px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}
.marquee::before {
    content: '';
    position: absolute;
    top: -1px; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0.3;
}
.marquee::after {
    content: '';
    position: absolute;
    bottom: -1px; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent2), transparent);
    opacity: 0.3;
}
.marquee-track {
    display: flex; gap: 40px;
    animation: marquee 25s linear infinite;
    width: max-content;
}
.marquee-track span {
    font-family: var(--font-display);
    font-size: 0.8rem;
    letter-spacing: 0.15em;
    white-space: nowrap;
    color: var(--gray);
    font-weight: 500;
}
.mx-dot { color: var(--accent); font-size: 0.4rem; }
@keyframes marquee {
    from { transform: translateX(0); }
    to   { transform: translateX(-50%); }
}

/* ===================== REVEAL ANIMATIONS ===================== */
.reveal-up {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===================== ABOUT ===================== */
.about {
    position: relative; z-index: 2;
    padding: 140px 0;
    overflow: hidden;
}
.about::before {
    content: '';
    position: absolute;
    top: 100px; right: -200px;
    width: 500px; height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(15,224,244,0.04), transparent 70%);
    filter: blur(60px);
    pointer-events: none;
}
.about::after {
    content: '';
    position: absolute;
    bottom: 80px; left: -200px;
    width: 400px; height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(34,185,231,0.03), transparent 70%);
    filter: blur(50px);
    pointer-events: none;
}
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}
.about-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3.2rem);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.03em;
}
.about-text {
    font-size: 0.92rem;
    color: var(--gray-light);
    line-height: 1.8;
    margin-bottom: 48px;
}
.about-stats { display: flex; gap: 48px; }
.about-stat { min-width: 0; }
.about-stat-num {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 3vw, 2.6rem);
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
    white-space: nowrap;
}
.about-stat-label {
    font-size: 0.7rem;
    color: var(--gray);
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

/* ===================== BENTO GRID ===================== */
.bento {
    position: relative; z-index: 2;
    padding: 100px 0 120px;
    overflow: hidden;
}
.bento::before {
    content: '';
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 800px; height: 800px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(15,224,244,0.03), transparent 60%);
    filter: blur(80px);
    pointer-events: none;
}
.bento-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-auto-rows: auto;
    gap: 16px;
}
.bento-card {
    position: relative;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: rgba(5, 10, 20, 0.08);
    backdrop-filter: blur(12px) saturate(1.8);
    -webkit-backdrop-filter: blur(12px) saturate(1.8);
    overflow: hidden;
    transition: border-color 0.4s, transform 0.4s var(--ease), box-shadow 0.4s;
}
.bento-card::before {
    content: '';
    position: absolute;
    top: 0; left: -100%;
    width: 100%; height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    animation: shimmer 5s ease-in-out infinite;
}
@keyframes shimmer {
    0% { left: -100%; opacity: 0; }
    50% { opacity: 0.5; }
    100% { left: 200%; opacity: 0; }
}
.bento-card:hover {
    border-color: var(--border-hover);
    box-shadow: 0 16px 48px rgba(15,224,244,0.08), 0 0 0 1px rgba(15,224,244,0.05);
}
.bento-card-glow {
    position: absolute; inset: 0;
    background: radial-gradient(circle at var(--gx, 50%) var(--gy, 50%), rgba(15,224,244,0.08) 0%, transparent 60%);
    opacity: 0;
    transition: opacity 0.4s;
    pointer-events: none;
}
.bento-card:hover .bento-card-glow { opacity: 1; }

.bento-card-inner { position: relative; z-index: 1; padding: 36px; }
.bento-icon {
    width: 52px; height: 52px;
    display: flex; align-items: center; justify-content: center;
    background: rgba(15,224,244,0.08);
    border: 1px solid rgba(15,224,244,0.15);
    border-radius: 14px;
    color: var(--accent);
    margin-bottom: 24px;
    transition: transform 0.4s var(--ease), background 0.4s;
}
.bento-card:hover .bento-icon { transform: scale(1.1); background: rgba(15,224,244,0.12); }

.bento-card h3 {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 10px;
    letter-spacing: -0.01em;
}
.bento-card p {
    font-size: 0.82rem;
    color: var(--gray);
    line-height: 1.6;
}
.bento-link {
    display: inline-block;
    margin-top: 20px;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--accent);
    transition: gap 0.3s;
}
.bento-link:hover { text-decoration: underline; }

.bento-lg { grid-column: span 2; grid-row: span 2; }
.bento-md { grid-column: span 1; }
.bento-wide { grid-column: span 2; }
.bento-wide-inner { display: flex; align-items: flex-start; gap: 32px; }
.bento-wide-inner > div:first-child { flex-shrink: 0; min-width: 200px; }

.bento-sm {
    display: flex; align-items: center; justify-content: center;
    text-align: center;
    min-height: 140px;
}
.bento-sm .bento-card-inner { padding: 24px; }
.bento-sm-label {
    display: block;
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--gray);
    margin-bottom: 6px;
}
.bento-sm-value {
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 700;
}

/* ===================== 3D STACK FEATURES ===================== */
.hfeat {
    position: relative; z-index: 2;
    height: 250vh;
}
.hfeat-sticky {
    position: sticky;
    top: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    overflow: hidden;
    padding: 60px 0 40px;
}

.stack-scene {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    perspective: 1200px;
    position: relative;
}
.stack-deck {
    position: relative;
    width: 340px;
    height: 280px;
    transform-style: preserve-3d;
}
.stack-card {
    position: absolute;
    inset: 0;
    padding: 36px 32px;
    background: rgba(5, 10, 20, 0.08);
    border: 1px solid rgba(15,224,244,0.1);
    border-radius: var(--radius);
    backdrop-filter: blur(12px) saturate(1.8);
    -webkit-backdrop-filter: blur(12px) saturate(1.8);
    will-change: transform, opacity;
    transition: box-shadow 0.4s;
    transform-origin: center center;
}
.stack-card:hover {
    box-shadow: 0 16px 48px rgba(15,224,244,0.1);
}
.stack-card-glow {
    position: absolute; inset: 0;
    border-radius: var(--radius);
    background: radial-gradient(circle at 30% 20%, rgba(15,224,244,0.06) 0%, transparent 60%);
    pointer-events: none;
}
.stack-num {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
    margin-bottom: 16px;
    line-height: 1;
}
.stack-card h3 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--white);
}
.stack-card p {
    font-size: 0.8rem;
    color: var(--gray);
    line-height: 1.6;
}

.hfeat-progress {
    width: 100%;
    height: 3px;
    background: rgba(255,255,255,0.05);
    border-radius: 3px;
    margin-top: 24px;
    overflow: hidden;
}
.hfeat-progress-bar {
    height: 100%; width: 0%;
    background: var(--gradient);
    border-radius: 3px;
    transition: width 0.15s;
}

/* ===================== EDGE TABLE ===================== */
.edge {
    position: relative; z-index: 2;
    padding: 100px 0;
}
.edge-table { border-radius: var(--radius); overflow: hidden; }
.edge-row {
    display: grid;
    grid-template-columns: 160px 1fr 120px;
    gap: 16px;
    padding: 20px 28px;
    border-bottom: 1px solid var(--border);
    align-items: center;
    font-size: 0.82rem;
    transition: background 0.3s;
}
.edge-row:hover { background: var(--surface); }
.edge-row:last-child { border-bottom: none; }
.edge-header-row {
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--gray);
    background: var(--surface);
}
.edge-header-row:hover { background: var(--surface); }
.edge-name { font-weight: 600; font-family: var(--font-display); }
.edge-desc { color: var(--gray); }
.edge-badge {
    text-align: center;
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 5px 14px;
    border-radius: var(--radius-pill);
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--border);
    color: var(--gray);
}
.edge-badge-accent {
    color: var(--accent);
    background: rgba(15,224,244,0.08);
    border-color: rgba(15,224,244,0.2);
}
.edge-row-highlight {
    background: rgba(15,224,244,0.03);
    border-bottom-color: rgba(15,224,244,0.15);
}

/* ===================== ECOSYSTEM ===================== */
.eco {
    position: relative; z-index: 2;
    padding: 100px 0 120px;
    overflow: hidden;
}

/* Connection lines */
.eco-connections {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 0;
}
.eco-svg {
    width: 100%; height: 100%;
    position: absolute;
    top: 0; left: 0;
}

.eco-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    position: relative;
    z-index: 1;
}
.eco-card {
    position: relative;
    border-radius: var(--radius);
    background: transparent;
    overflow: hidden;
    transition: transform 0.5s var(--ease), box-shadow 0.5s;
}
.eco-card::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: calc(var(--radius) + 1px);
    background: conic-gradient(from var(--eco-angle, 0deg),
        transparent 0%, rgba(15,224,244,0.3) 10%, transparent 20%,
        transparent 50%, rgba(34,185,231,0.2) 60%, transparent 70%);
    z-index: -1;
    animation: ecoRotate 6s linear infinite;
    opacity: 0;
    transition: opacity 0.5s;
}
.eco-card:hover::before { opacity: 1; }
.eco-card::after {
    content: '';
    position: absolute;
    inset: 1px;
    border-radius: calc(var(--radius) - 1px);
    background: rgba(5, 10, 20, 0.08);
    backdrop-filter: blur(12px) saturate(1.8);
    -webkit-backdrop-filter: blur(12px) saturate(1.8);
    z-index: -1;
}
@keyframes ecoRotate {
    to { --eco-angle: 360deg; }
}
@property --eco-angle {
    syntax: '<angle>';
    initial-value: 0deg;
    inherits: false;
}

.eco-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 60px rgba(15,224,244,0.08), 0 0 0 1px rgba(15,224,244,0.1);
}

/* Holographic shimmer overlay */
.eco-holo {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        transparent 30%,
        rgba(15,224,244,0.04) 45%,
        rgba(34,185,231,0.06) 50%,
        rgba(15,224,244,0.04) 55%,
        transparent 70%
    );
    background-size: 300% 300%;
    animation: holoShimmer 5s ease-in-out infinite;
    pointer-events: none;
    z-index: 2;
    opacity: 0;
    transition: opacity 0.5s;
}
.eco-card:hover .eco-holo { opacity: 1; }
@keyframes holoShimmer {
    0% { background-position: 100% 100%; }
    50% { background-position: 0% 0%; }
    100% { background-position: 100% 100%; }
}

/* Border glow */
.eco-border-glow {
    position: absolute;
    inset: 0;
    border-radius: var(--radius);
    border: 1px solid rgba(15,224,244,0.08);
    transition: border-color 0.4s;
    pointer-events: none;
    z-index: 3;
}
.eco-card:hover .eco-border-glow {
    border-color: rgba(15,224,244,0.25);
}

.eco-card-inner {
    padding: 36px 32px;
    position: relative;
    z-index: 3;
}

/* Icon with animated ring */
.eco-icon-wrap {
    position: relative;
    width: 56px; height: 56px;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 20px;
}
.eco-emoji {
    font-size: 1.8rem;
    position: relative;
    z-index: 1;
    filter: saturate(1.2);
}
.eco-icon-ring {
    position: absolute;
    inset: -6px;
    border-radius: 50%;
    border: 1px solid rgba(15,224,244,0.1);
    transition: border-color 0.4s, transform 0.4s var(--ease);
}
.eco-card:hover .eco-icon-ring {
    border-color: rgba(15,224,244,0.3);
    transform: scale(1.15);
}
.eco-icon-ring::after {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    border: 1px dashed rgba(15,224,244,0.06);
    animation: dashSpin 12s linear infinite;
}
@keyframes dashSpin { to { transform: rotate(360deg); } }

.eco-card h3 {
    font-family: var(--font-display);
    font-size: 1.05rem; font-weight: 600;
    margin-bottom: 8px;
    transition: color 0.3s;
}
.eco-card:hover h3 { color: var(--accent); }
.eco-card p { font-size: 0.8rem; color: var(--gray); line-height: 1.65; }

/* Status indicator */
/* Eco card entrance — 3D flip + blur dissolve */
.eco-card.reveal-up {
    opacity: 0;
    transform: perspective(800px) rotateX(15deg) translateY(60px) scale(0.9);
    filter: blur(8px);
    transition: opacity 0.8s var(--ease), transform 0.8s var(--ease), filter 0.8s var(--ease);
}
.eco-card.reveal-up.visible {
    opacity: 1;
    transform: perspective(800px) rotateX(0) translateY(0) scale(1);
    filter: blur(0);
}
/* Stagger delays via data-delay */
.eco-card[data-delay="0"].reveal-up { transition-delay: 0s; }
.eco-card[data-delay="1"].reveal-up { transition-delay: 0.08s; }
.eco-card[data-delay="2"].reveal-up { transition-delay: 0.16s; }
.eco-card[data-delay="3"].reveal-up { transition-delay: 0.24s; }
.eco-card[data-delay="4"].reveal-up { transition-delay: 0.32s; }
.eco-card[data-delay="5"].reveal-up { transition-delay: 0.4s; }

.eco-status {
    display: inline-block;
    margin-top: 16px;
    font-size: 0.6rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #34d399;
}
.eco-status-dev { color: var(--accent); }
.eco-status-plan { color: var(--gray); }

/* ===================== ROADMAP ===================== */
.roadmap {
    position: relative; z-index: 2;
    padding: 100px 0 140px;
}
.rm-timeline {
    position: relative;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.rm-line {
    position: absolute;
    top: 7px; left: 0; right: 0;
    height: 2px;
    background: var(--border);
    z-index: 0;
}
.rm-line::after {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 0%; height: 100%;
    background: var(--gradient);
    transition: width 1.5s var(--ease);
}
.rm-line.animated::after { width: 100%; }

.rm-item { position: relative; z-index: 1; }
.rm-dot {
    width: 14px; height: 14px;
    border-radius: 50%;
    background: var(--bg);
    border: 2px solid var(--accent);
    margin: 0 auto 20px;
    position: relative;
    box-shadow: 0 0 12px rgba(15,224,244,0.3);
}
.rm-dot::after {
    content: '';
    position: absolute; inset: -5px;
    border-radius: 50%;
    border: 1px solid rgba(15,224,244,0.15);
    animation: rmPulse 2s ease-in-out infinite;
}
@keyframes rmPulse {
    0%,100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.6); opacity: 0; }
}

.rm-card {
    padding: 28px 24px;
    background: rgba(5, 10, 20, 0.08);
    backdrop-filter: blur(12px) saturate(1.8);
    -webkit-backdrop-filter: blur(12px) saturate(1.8);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: border-color 0.4s, transform 0.4s var(--ease), box-shadow 0.4s;
}
.rm-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: 0 12px 36px rgba(15,224,244,0.06);
}
.rm-phase {
    display: inline-block;
    font-size: 0.6rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--accent);
    padding: 4px 12px;
    background: rgba(15,224,244,0.08);
    border-radius: var(--radius-pill);
    margin-bottom: 14px;
}
.rm-card h3 {
    font-family: var(--font-display);
    font-size: 1rem; font-weight: 600;
    margin-bottom: 14px;
}
.rm-card li {
    font-size: 0.78rem;
    color: var(--gray);
    padding: 4px 0 4px 16px;
    position: relative;
}
.rm-card li::before {
    content: '';
    position: absolute; left: 0; top: 12px;
    width: 6px; height: 6px;
    border-radius: 50%;
    background: rgba(15,224,244,0.2);
    border: 1px solid rgba(15,224,244,0.4);
}

/* ===================== CTA ===================== */
.cta-section {
    position: relative; z-index: 2;
    padding: 40px 0 100px;
}
.cta-box {
    text-align: center;
    padding: 80px 40px;
    border-radius: 24px;
    background:
        radial-gradient(ellipse 50% 60% at 50% 100%, rgba(15,224,244,0.1) 0%, transparent 60%),
        radial-gradient(ellipse 50% 40% at 50% 0%, rgba(34,185,231,0.06) 0%, transparent 60%),
        var(--surface);
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}
.cta-box::before {
    content: '';
    position: absolute;
    top: -1px; left: 10%; right: 10%;
    height: 2px;
    background: var(--gradient);
    filter: blur(1px);
    box-shadow: 0 0 20px rgba(15,224,244,0.4);
}
.cta-box::after {
    content: '';
    position: absolute;
    bottom: 0; left: 50%;
    transform: translateX(-50%);
    width: 400px; height: 200px;
    background: radial-gradient(ellipse, rgba(15,224,244,0.08), transparent 70%);
    filter: blur(40px);
    pointer-events: none;
}
.cta-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 32px;
}
.cta-actions {
    display: flex; align-items: center; justify-content: center; gap: 24px; flex-wrap: wrap;
}
.cta-socials {
    display: flex; gap: 10px;
}
.cta-socials a {
    width: 42px; height: 42px;
    display: flex; align-items: center; justify-content: center;
    border: 1px solid var(--border);
    border-radius: 50%;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--gray);
    transition: border-color 0.3s, color 0.3s, transform 0.3s var(--ease);
}
.cta-socials a:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
}

/* ===================== FOOTER ===================== */
.footer {
    position: relative; z-index: 2;
    border-top: 1px solid var(--border);
    padding: 64px 0 32px;
}
.footer-top {
    display: flex;
    justify-content: space-between;
    gap: 60px;
    margin-bottom: 48px;
}
.footer-brand { max-width: 300px; }
.footer-logo { height: 28px; margin-bottom: 14px; }
.footer-brand p { font-size: 0.8rem; color: var(--gray); line-height: 1.6; }
.footer-links { display: flex; gap: 64px; }
.footer-col h4 {
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--gray);
    margin-bottom: 14px;
}
.footer-col a {
    display: block;
    font-size: 0.8rem;
    color: var(--gray-light);
    padding: 4px 0;
    transition: color 0.3s;
}
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    font-size: 0.68rem;
    color: var(--gray);
}
.footer-legal { display: flex; gap: 20px; }
.footer-legal a { transition: color 0.3s; }
.footer-legal a:hover { color: var(--white); }

/* ===================== RESPONSIVE ===================== */
@media (max-width: 1024px) {
    .bento-grid { grid-template-columns: repeat(2, 1fr); }
    .bento-lg { grid-column: span 2; grid-row: span 1; }
    .bento-wide { grid-column: span 2; }
    .rm-timeline { grid-template-columns: repeat(2, 1fr); }
    .rm-line { display: none; }
    .eco-grid { grid-template-columns: repeat(2, 1fr); }
    .about-grid { grid-template-columns: 1fr; gap: 48px; }
}

@media (max-width: 768px) {
    .nav-pill { display: none; }
    .nav-burger { display: block; }
    .container { padding: 0 20px; }

    /* ---- Hero: bold & immersive mobile ---- */
    .hero {
        padding: 0 20px;
        min-height: 100svh;
        display: flex;
        align-items: center;
        justify-content: center;
        padding-top: 0;
        padding-bottom: 0;
    }
    .hero-content { max-width: 100%; }
    .hero-title {
        font-size: clamp(4.2rem, 20vw, 7rem);
        letter-spacing: -0.04em;
        margin-bottom: 20px;
        line-height: 0.9;
    }
    .hero-title::after {
        display: block;
        bottom: -6px;
        width: 80%;
        height: 60px;
        filter: blur(24px);
    }
    /* Ring sits behind title area */
    .hero-ring {
        width: 340px; height: 340px;
        opacity: 0.6;
        top: 50%;
    }
    .hero-ring-pulse { inset: -24px; }
    .hero-orbit { width: 420px; height: 420px; opacity: 0.45; top: 50%; }
    /* Selective decorations — keep motion, drop clutter */
    .hero-float-tags { display: none; }
    .hero-beams { display: none; }
    .hero-corner { display: none; }
    .hero-hlines { display: block; opacity: 0.5; }
    .hero-grid { height: 45%; opacity: 0.45; }
    #particleCanvas { opacity: 0.55; }
    /* Badge */
    .hero-badge {
        font-size: 0.65rem;
        padding: 6px 16px 6px 10px;
        margin-bottom: 20px;
        backdrop-filter: blur(12px);
    }
    .hero-badge-dot { width: 7px; height: 7px; }
    /* Description & actions */
    .hero-desc {
        font-size: 0.88rem;
        margin-top: 8px;
        margin-bottom: 32px;
        max-width: 90%;
        margin-left: auto;
        margin-right: auto;
        line-height: 1.7;
        color: rgba(255,255,255,0.7);
    }
    .hero-actions { gap: 12px; flex-wrap: wrap; justify-content: center; }
    .btn-primary, .btn-ghost {
        padding: 13px 24px;
        font-size: 0.8rem;
        border-radius: 50px;
    }
    .hero-scroll { height: 40px; bottom: 20px; }

    /* ---- About ---- */
    .about { padding: 70px 0; }
    .about-grid { grid-template-columns: 1fr; gap: 32px; }
    .about-title { font-size: 1.7rem; }
    .about-text { font-size: 0.85rem; margin-bottom: 32px; }
    .about-stats { flex-direction: row; gap: 20px; flex-wrap: wrap; }
    .about-stat-num { font-size: 1.5rem; }

    /* ---- Bento ---- */
    .bento { padding: 60px 0 70px; }
    .bento-grid { grid-template-columns: 1fr; gap: 12px; }
    .bento-lg, .bento-wide { grid-column: span 1; }
    .bento-wide-inner { flex-direction: column; }
    .section-head { margin-bottom: 32px; }
    .section-title { font-size: 1.5rem; }

    /* ---- 3D Stack → mobile: clean 2-col grid ---- */
    .hfeat { height: auto !important; }
    .hfeat-sticky {
        position: relative !important;
        height: auto !important;
        padding: 60px 0 40px;
    }
    .stack-scene {
        perspective: none;
        display: block;
        padding: 0 20px;
    }
    .stack-deck {
        position: relative;
        width: 100%;
        height: auto;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 12px;
        transform-style: flat;
    }
    .stack-card {
        position: relative !important;
        inset: auto !important;
        transform: none !important;
        opacity: 1 !important;
        width: 100%;
        min-height: 150px;
        padding: 24px 18px;
    }
    .stack-card-glow { display: none; }
    .stack-num { font-size: 1.3rem; margin-bottom: 6px; }
    .stack-card h3 { font-size: 0.82rem; margin-bottom: 6px; }
    .stack-card p { font-size: 0.7rem; line-height: 1.5; }
    .hfeat-progress { display: none; }

    /* ---- Edge table ---- */
    .edge { padding: 60px 0; }
    .edge-row { grid-template-columns: 1fr; gap: 6px; padding: 14px 16px; }
    .edge-header-row { display: none; }

    /* ---- Ecosystem ---- */
    .eco { padding: 60px 0 70px; }
    .eco-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
    .eco-connections { display: none; }
    .eco-card-inner { padding: 20px 16px; }
    .eco-icon-wrap { width: 44px; height: 44px; margin-bottom: 14px; }
    .eco-emoji { font-size: 1.4rem; }
    .eco-card h3 { font-size: 0.9rem; }
    .eco-card p { font-size: 0.72rem; }
    .eco-status { font-size: 0.55rem; margin-top: 10px; }

    /* ---- Roadmap ---- */
    .roadmap { padding: 60px 0 70px; }
    .rm-timeline { grid-template-columns: 1fr 1fr; gap: 12px; }
    .rm-card { padding: 18px 16px; }
    .rm-phase { font-size: 0.55rem; margin-bottom: 10px; }
    .rm-card h3 { font-size: 0.9rem; }
    .rm-card li { font-size: 0.72rem; }
    .rm-dot { width: 10px; height: 10px; margin-bottom: 12px; }

    /* ---- CTA ---- */
    .cta-box { padding: 40px 20px; border-radius: 16px; }
    .cta-title { font-size: 1.4rem; margin-bottom: 24px; }
    .cta-socials a { width: 36px; height: 36px; font-size: 0.65rem; }
    .btn-primary.btn-lg { padding: 14px 24px; font-size: 0.8rem; }

    /* ---- Marquee ---- */
    .marquee-track span { font-size: 0.65rem; }
    .marquee { padding: 14px 0; }
}

@media (max-width: 480px) {
    .hero { padding-bottom: 10svh; }
    .hero-title { font-size: clamp(3.4rem, 18vw, 5rem); }
    .hero-ring { width: 260px; height: 260px; top: 30%; }
    .hero-ring-pulse { inset: -18px; }
    .hero-orbit { width: 330px; height: 330px; top: 30%; }
    .hero-desc { font-size: 0.82rem; max-width: 92%; }
    .btn-primary, .btn-ghost { padding: 12px 20px; font-size: 0.76rem; }
    .section-title { font-size: 1.3rem; }
    .about-title { font-size: 1.4rem; }
    .stack-deck { grid-template-columns: 1fr; gap: 10px; }
    .stack-card { min-height: auto; padding: 20px 16px; }
    .stack-num { font-size: 1.2rem; }
    .eco-grid { grid-template-columns: 1fr; gap: 10px; }
    .rm-timeline { grid-template-columns: 1fr; gap: 10px; }
    .about-stats { gap: 16px; }
    .about-stat-num { font-size: 1.3rem; }
    .cta-title { font-size: 1.2rem; }
    .btn-primary.btn-lg { padding: 12px 20px; font-size: 0.76rem; }
}